Unlock instant, AI-driven research and patent intelligence for your innovation.

Electronic device

a technology of electronic devices and optical sensors, applied in semiconductor devices, instruments, computing, etc., can solve the problems of inability to adjust brightness appropriately, limited element configuration of optical sensors, etc., and achieve the effect of reducing power consumption, reducing power consumption, and easy-to-see display

Active Publication Date: 2011-12-27
SHARP KK
View PDF14 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a display system with an automatic light control function that adjusts the brightness of the display apparatus based on the use environment, particularly the lightness of the ambient light. This system can enhance visibility and reduce power consumption in a variety of electronic devices, such as mobile phones, PDAs, and TVs. The technical effects of this system include improved visibility and reduced power consumption, as well as the ability to automatically adjust brightness based on the user's environment. The use of monolithic formation techniques for circuit elements in the display apparatus can also reduce costs and improve performance.

Problems solved by technology

On the other hand, in the case where an optical sensor for detecting the lightness of ambient light is formed monolithically in a peripheral region of a display apparatus with a TFT-having the above configuration in a display region, if an attempt is made so as to minimize the increase in a production process, the element configuration of the optical sensor is limited.
However, it was clarified that if an attempt is made so as to realize a display apparatus by forming the above-mentioned optical sensor shown in FIG. 13 in a peripheral region of an active matrix substrate, the following problems occur.
Therefore, in spite of the fact that the adjustment of a brightness of a display apparatus originally needs to be performed in accordance with the lightness of visible light, there arises a problem that the optical sensor reacts with the intensity of UV-light, which makes it impossible to adjust a brightness appropriately.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electronic device
  • Electronic device
  • Electronic device

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0053]FIG. 1 is a schematic configuration view of a display apparatus 1 provided in an electronic device according to First Embodiment. The display apparatus 1 includes an active matrix substrate 2 on which a number of pixels are arranged in a matrix, and a counter substrate 3 placed so as to be opposed to the active matrix substrate 2, and liquid crystal that is a display medium 4 is interposed in a gap between the substrates. The active matrix substrate 2 and the counter substrate 3 are bonded to each other with a frame-shaped seal resin (not shown) along an outer periphery of the counter substrate 3.

[0054]In each pixel 5 of the active matrix substrate 2, a thin film transistor (TFT) 6 and a pixel electrode 7 for driving the display medium 4 are formed. The counter substrate 3 is provided with a counter electrode (not shown) and a color filter (not shown).

[0055]The active matrix substrate 2 includes a region (pixel array region) 8 in which the pixels 5 are arranged, and a peripher...

second embodiment

[0085]An electronic device according to Second Embodiment will be described with reference to FIGS. 6 and 7. The same constituent members as those in First Embodiment are denoted with the same reference numerals as those used in First Embodiment, and the description thereof will be omitted.

[0086]Although the electronic device according to Second Embodiment has a UV-light blocking member in an upper layer of the optical sensor 11 in the same way as in First Embodiment, the configuration of the UV-light blocking member is different from that in First Embodiment. In the present embodiment, as shown in FIG. 6, a UV-light blocking member 80 having a substantially equal area to that of the active matrix substrate 2 is placed so as to cover both the pixel array region 8 and the peripheral region 9 in their entirety. As the UV-light blocking member 80, for example, a transparent acrylic plate having a UV-light absorbing effect can be used. The UV-light absorptivity of the acrylic plate is p...

third embodiment

[0089]The electronic device according to Third Embodiment of the present invention will be described with reference to FIG. 8. The same constituent members as those in each of the above-mentioned embodiments are denoted with the same reference numerals as those used in the embodiments, and the description thereof will be omitted.

[0090]The electronic device according to Third Embodiment is different from First and Second Embodiments in that the electronic device according to Third Embodiment has a touch panel on the surface of the display apparatus 1, and at least a part of the constituent members of the touch panel function as a UV-light blocking member.

[0091]FIG. 8 is a cross-sectional view showing a configuration of the electronic device of the present embodiment. A touch panel 50 is stacked on the surface of the display apparatus 1. The touch panel 50 includes a support substrate 52 with a transparent electrode 51 formed thereon, and a flexible substrate 54 with a transparent ele...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An electronic device is provided which can appropriately adjust the brightness of a display apparatus in accordance with the lightness of visible light by preventing UV-light from being incident upon an optical sensor. An electronic device having, in a housing, a display apparatus (1) that includes an active matrix substrate (2) having a pixel array region (8) in which a plurality of pixels (5) are arranged and a display medium (4) provided in a gap between the active matrix substrate (2) and a counter substrate (3), includes an optical sensor (11) provided in a peripheral region (9) present in a periphery of the pixel array region (8) in the active matrix substrate (2) of a display apparatus (1), and a UV-light blocking member (70) that is provided in a portion covering the optical sensor (11) in the housing and transmits visible light and absorbs UV-light.

Description

[0001]This application is the U.S. national phase of International Application No. PCT / JP2006 / 308510, filed 24 Apr. 2006, which designated the U.S. and claims priority to Japanese Patent Application No. 2005-132939, filed 28 Apr. 2005, the entire contents of each of which are hereby incorporated by reference.TECHNICAL FIELD[0002]The technology herein relates to an electronic device having a flat panel type display apparatus such as a liquid crystal display apparatus and an electroluminescence (EL) display apparatus, and in particular, to an electronic device having an environment sensor such as an optical sensor that detects the lightness of an ambient environment.BACKGROUND AND SUMMARY[0003]A flat panel type display apparatus such as a liquid crystal display apparatus has currently been incorporated in various electronic devices due to the features of thinness, light weight, and low power consumption, and further due to the technical development for the enhancement of display perfo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(United States)
IPC IPC(8): G09G5/00
CPCG02F1/1336G09G3/20G02F2201/086G02F2201/58G09G2300/08G09G2360/14H01L27/12
Inventor SAKAMOTO, MAYUKOIZUMI, YOSHIHIROKATOH, HIROMINAGAI, TOMOYUKI
Owner SHARP KK